12.12.11 Literal examples in ODT export

The ODT export back-end supports literal examples (see Literal examples)
with full fontification. Internally, the ODT export back-end relies on
htmlfontify.el to generate the style definitions needed for fancy
listings. The auto-generated styles get ‘OrgSrc’ prefix and inherit
colors from the faces used by Emacs font-lock library for that source
language.